@unpublished{repository54561,
           title = {SHRAF 2 2B},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
          author = {Doni Wahidul Akbar, Doni},
             url = {http://repository.uhamka.ac.id/id/eprint/54561/}
}